Download and install
Download address: https://www.jetbrains.com/idea/download/#section=mac
Operation shortcut keys
Switch
command + E: View the recently viewed files (application scenarios, when there are many editing windows)
command +, or command + shift + ,: project switching (used to switch between multiple projects)
command + shift + A + search plugins +: install plugins
Precise search
command + O: precise search for class (you can search all classes in jar package)
command + shift + O: precise search for file files (you can search all files in the jar package)
command + option + O: precise search function
command + shift + F: string precise search
Column operation
Example to write an enumeration class
Step 1: control + command + G (select all columns)
The second step: option + shift + right arrow to select the string to be processed
The third step: shift + command + U string case conversion
Live template operation (quickly create common Java statements)
postfix operation
Example 1:
100.for+回车:for (int i = 0; i < 100; i++) { }
Example 2:
public class User {
public User(String userName){
userName.field
}
}
userName.field + Enter
public class User {
private final String userName;
public User(String userName){
this.userName = userName;
}
}
实例3:
public void test(User user){
user.nn
}
user + point nn automatically add not equal to the judgment of null
public void test(User user){
if (user != null) {
}
}
alter + enter operation
Example 1:
option + Enter: automatic creation method
public void test (User user) {
test1 ()
}
private void test1 () {
}
Example 2:
Quickly create interface implementation class (option + Enter)
Example 3: Automatic package guide
option + Enter
Refactoring
Example 1:
shift + F6: modify all parameters (change parameter name)
Find code modification track
shift + command search show-history to view modification records
Connect everything
1. Database association
2. Spring association (each bean can be tracked after setting)
command + semicolon
Breakpoint debugging
1. Add a breakpoint: command + F9
2. F8 single line is executed one by one, F9 is skipped
3.shift + command + F8: view all breakpoints
File operations
1. Create an xml file
control + option + n select new File
2. View the structure diagram
1. command + F12 View methods and member variables in a class
2. View of maven structure diagram
